Malicious PDF — malware analysis report

Static analysis result for SHA-256 dacf5baded61ff88…

MALICIOUS

PDF

34.6 KB Created: 2021-06-19 04:39:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 39788ecd1e799a3dd6be5c76640700ff SHA-1: eaa7891883fb25780d978adb6a54014e50a4c8e9 SHA-256: dacf5baded61ff886a37801698ea7726e4e407cd1a2b895a320d1faf7881e08c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'generators'. The document body and embedded links suggest a lure to trick users into visiting these sites, likely to download further malware or engage in phishing. The presence of multiple malicious redirector links and the ML classifier output strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.co/app/431946152/roblox-royale-high-school-hacks-de-todo-game-hack In PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/rbx-free-robux_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-connection-lost_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/hack-coin-master-for-android_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/do-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-games-pastebin-roblox_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-admin-roblox_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-heaven-free-spins-link_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-avatar-roblox_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ff4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF4 22068 bytes
SHA-256: 9033a72dc00fc9dc0905bb4aa9f8b8da01370f2e3f63872ce6e8cf86176e9b13
font_01_sfnt_off000060f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F0 19464 bytes
SHA-256: e732fec24f0d47d7a283c7e2d1a445ef06d1eada3b08f57d0f6b181f331fbc8f

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